Features: _x000D_ 1. 100% brand new and high quality. _x000D_ 2. You can use it in the dark light with flashlight. _x000D_ 3. With an earphone support to enable service technician to work conveniently and comfortably in noisy environment. _x000D_ 4. Sensitive sensor, stable and reliable. _x000D_ 5. High quality protective case provides more secure protection. _x000D_ 6. Used in telecommunication network line engineering and daily maintenance, computer network line engineering, other metal wire line engineering and maintenance work _x000D_ _x000D_ Specification _x000D_ Model: GM60 _x000D_ Transmitter Receiver _x000D_ Dimension 64*31*119mm/2.5*1.2*4.7in 48.6*26*177mm/1.9*1.0*7.0in _x000D_ Power(not included) 1. 5V AAA*3batteries 6F22 9V battery _x000D_ Signal Tracing_x000D_ Transmit DistanceDisplay >1km _x000D_ Display LED _x000D_ Operating Temperature -10-40 (14-104) _x000D_ Operating Humidity 10-95% _x000D_ Storage Temperature -20-60 (-4-140) _x000D_ _x000D_ Weight: Approx. 280g / 9.9oz_x000D_ _x000D_ _x000D_ Package List:_x000D_ 1 * Emitter_x000D_ 1 * Receiver_x000D_ 1 * Network Cable_x000D_ 2 * Cable with Crocodile Clamp_x000D_ _x000D_ Note: _x000D_ 1. To prevent electric shock and personal injuries,please do not: ._x000D_ 2. Trace the cable with strong current lest personal injuries and/or equipment damage occur._x000D_ 3. Use the unit in thunder storm weather lest it results in personal injury and/or equipment damage._x000D_ 4. To avoid the damage of the device and the detected, please pay attention to the following:_x000D_ 5. Do not use the cable order verifying function for the cable that has electricity._x000D_ 6. Take out the batteries if the product is expected not for use for long time, to avoid erosion of the battery leakage which may result in poor battery contact._x000D_ 7. Do not dismantle the device. Please contact the local dealer to repair the product by authorized technicians.